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Real-time monitoring of deformation of large structure parts is of great significance and the deformation of such structure parts is often accompanied with the change of curvature. The curvature can be obtained by measuring changes of strain, surface curve and modal displacement of the structure. However, many factors are faced with difficulty in measurement and low sensitivity at a small deformation level. In order to measure curvature in an effective way, a novel fibre Bragg grating (FBG) curvature sensor is proposed, which aims at removing the deficiencies of traditional methods in low precision and narrow adjusting. The sensor combines two FBGs with a specific structure of stainless steel elastomer. The elastomer can transfer the strain of the structure part to the FBG and then the FBG measures the strain to obtain the curvature. The performed simulation and experiment show that the sensor can effectively amplify the strain to the FBG through the unique structure of the elastomer, and the accuracy of the sensor used in the experiment is increased by 14% compared with that of the FBG used for direct measurement.
Czasopismo
Rocznik
Tom
Strony
577--587
Opis fizyczny
Bibliogr. 19 poz., fot., rys., tab., wykr., wzory
Twórcy
autor
- Wuhan University of Technology, School of Mechanical and Electrical Engineering, Wuhan 430070, Hubei, China
autor
- Wuhan University of Technology, Hubei Digital Manufacturing Key Laboratory, Wuhan 430070, Hubei, China
autor
- Wuhan University of Technology, School of Mechanical and Electrical Engineering, Wuhan 430070, Hubei, China
- Wuhan University of Technology, Hubei Digital Manufacturing Key Laboratory, Wuhan 430070, Hubei, China
autor
- Wuhan University of Technology, Hubei Digital Manufacturing Key Laboratory, Wuhan 430070, Hubei, China
autor
- Wuhan University of Technology, Hubei Digital Manufacturing Key Laboratory, Wuhan 430070, Hubei, China
Bibliografia
- [1] Mi, L., Yin, G.F., Sun, M.N., Wang. X.H. (2012). Effects of preloads on joints on dynamic stiffness of a whole machine tool structure. J. Mech. Sci. Technol., 26(2), 495-508.
- [2] Fu, Y.L., Di, H.T., Liu, R.Q. (2010). Light intensity modulation fiber-optic sensor for curvature measurement. Opt. Laser Technol., 42(4), 594-599.
- [3] Leal-Junior, A.G., Frizera, A., José-Pontes, M. (2018). Sensitive zone parameters and curvature radius evaluation for polymer optical fiber curvature sensors. Opt. Laser Technol., 100, 272-281.
- [4] Nawrot, U., Geernaert, T., De-Pauw, B., Anastasopoulos, D., Reynders, E., De-Roeck, G., Berghmans, F. (2017). Development of a mechanical strain amplifying transducer with Bragg grating sensor for low-amplitude strain sensing. Smart Mater. Struct., 26(7).
- [5] Biral, F., Bosetti, P., Oboe, R., Tondini, F. (2006). A new direct deformation sensor for active compensation of positioning errors in large milling machines. Int. Work. Adv. Motion Control. AMC., 126-131.
- [6] Feng, X., Chen, G., Hulsey, J. (2017). Monitoring Bridge Dynamic Responses Using Fiber Bragg Grating Tiltmeters. Sensors, 17(10), 2390.
- [7] Ling, H.Y., L., K.T., Jin, W., Kok-Cheung, C. (2007). Characterization of dynamic strain measurement using reflection spectrum from a fiber Bragg grating. Opt. Commun., 270(1), 25-30.
- [8] Yu, X., Xi, W.B., Xu, W.W., Lei, M.Z., Liu, Z., Cui, L., Song, Y.T., Wu, S.T. (2017). Multi-parameters measurement of EAST PFCs prototype with FBG sensors. Fusion Eng. Des., 122, 1-7.
- [9] Chen, Y., Chen, L.J., Liu, H.L., Wang, K. (2013). Research on FBG sensor signal wavelength demodulation based on improved wavelet transform. Optik, 124(21), 4802-4804.
- [10] Li, L.T., Zhang, D.S., Liu, H., Guo, Y.X., Zhu, F.D. (2014). Design of an enhanced sensitivity FBG strain sensor and application in highway bridge engineering. Photonic Sensors, 4(2), 162-167.
- [11] Jeong, U., Cho, K.J. (2016). A novel low-cost, large curvature bend sensor based on a Bowden-cable. Sensors (Switzerland), 16(7).
- [12] Hu, H.F., Sun, S.J., Lv, R.Q., Zhao, Y. (2016). Design and experiment of an optical fiber micro bend sensor for respiration monitoring. Sensors Actuators, A Phys., 251, 126-133.
- [13] Wu, Y., Pei, L., Jin, W.X., Jiang, Y.C., Yang, Y.G., Shen, Y., Jian, S.S. (2017). Highly sensitive curvature sensor based on asymmetrical twin core fiber and multimode fiber. Opt. Laser Technol., 92, 74-79.
- [14] Feng, D.M., Feng, M.Q., Ozer, E., Fukuda, Y. (2015). A vision-based sensor for noncontact structural displacement measurement. Sensors, 15(7), 16557-16575.
- [15] Kwon, O.J., Shin, M., Han, Y.G. (2014). Fabrication of micro-ridge long-period gratings inscribed on polarization-maintaining fibers. Nanoscale Res. Lett., 9(1), 1-5.
- [16] Liu, H.L., Zhu, Z.W., Zheng, Y., Liu, B., Xiao, F. (2018). Experimental study on an FBG strain sensor. Opt. Fiber Technol., 40, 144-151.
- [17] Guo, H.L., Xiao, G.Z., Mrad, N., Yao, J.P. (2011). Fiber optic sensors for structural health monitoring of air platforms. Sensors, 11(4), 3687-3705.
- [18] Lee, B. (2003). Review of the present status of optical fiber sensors. Opt. Fiber Technol. 9(2), 57-79.
- [19] Liu, M., Zhang, X.M., Fatikow, S. (2017). Design and analysis of a multi-notched flexure hinge for compliant mechanisms. Precis. Eng., 48, 292-304.
Uwagi
EN
1. This research was supported by the National Natural Science Foundation of China (General Program, Grant NO51375359) and the Excellent Dissertation Cultivation Funds of Wuhan University of Technology (Grant NO2016-YS-030). The authors would like to thank Hubei Digital Manufacturing Key Laboratory (Wuhan University of Technology) for providing the experiment equipment to accomplish the project.
PL
2. Opracowanie rekordu w ramach umowy 509/P-DUN/2018 ze środków MNiSW przeznaczonych na działalność upowszechniającą naukę (2018).
Typ dokumentu
Bibliografia
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bwmeta1.element.baztech-4969f1b9-2133-4e1c-97da-5ff0ee685cc6